Answer:
a=4
r = \frac{-16}{4}r=4−16
r = -4r=−4
a_{13} = 4×(-4)^{(13-1)}a13=4×(−4)(13−1)
a_{13} = 4×(-4)^{12}a13=4×(−4)12
a_{13} = 4×16777216a13=4×16777216
a_{13} = 67108864a13=67108864
Donde esta la fiesta?
Cuando es el festival de arte?
Por que tu no sabes aleman?
(Thats all I got right now, I hope I somewhat helped you.)
